DERA ISMAIL KHAN: In an apparent incident of target killing, unidentified gunmen shot dead two low-grade employees of the Tehsil Municipal Administration (TMA) in the limits of Cantt Police Station in the city on Monday, police sources said. The sources said the assailants armed with sophisticated guns opened fire on Qaiser Abbas, 38, and Dilawar, 22, leaving them critically injured. The injured were rushed to a nearby hospital, but they succumbed to injuries on the way.